Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
  • B01D35/30—Filter housing constructions
  • B01D35/306—Filter mounting adapter
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D27/00—Cartridge filters of the throw-away type
  • B01D27/08—Construction of the casing

Definitions

• the present invention relates to a mounting plate for oil filters of the type used for internal combustion engines.
• a typical oil filter for an internal combustion engine includes a cup or can- shaped enclosure having a cylindrical side wall, an open end and a closed end. A filtering media or element is received in the enclosure and the open end of the enclosure is then affixed to an oil filter mounting plate generally by crimping.
• the oil filter mounting plate as presently used is integrally formed from plate steel and includes a circular annular planar rim portion which receives the oil filter housing, a depressed annular central portion and an integral upstanding central boss having an internally threaded bore which threadably receives an oil pipe communicating with the engine block.
• the depressed central portion surrounding the boss includes an integral annular inclined portion having a plurality of spaced openings which receive the oil from the engine block. The oil is then circulated through the filter media and returned to the engine block through the central opening in the integral boss.
• the prior art oil filter mounting plate integrally formed from plate steel requires expensive forging, forming and machining operations and threading of the internal surface of the boss.
• the bore must be internally threaded in the axis of the bore, the resulting threaded bore is not perpendicular to the plane of the plate.
• the oil filter mounting plate assembly of this invention is formed from at least two parts including a plate having a circular outer periphery and a central portion having a polygonal opening therethrough, and a nut press fit in the polygonal opening in generally sealed relation having a thickness greater than the plate and including an internally threaded central opening or bore.
• the nut has a thickness greater than the plate such that the internally threaded central opening of the nut thus has sufficient threads for threaded sealed securement to the oil pipe extending from the engine block, but eliminates the requirement for forging and threading after forging of a unitary part.
• the nut includes a polygonal outer periphery configured to be received in the polygonal opening of the plate in a press fit and a linear groove defined in opposed sides of the polygonal outer periphery of the nut receiving the plate and permanently affixing the nut to the plate in sealed relation.
• the polygonal opening through the central portion of the plate has at least five sides and the polygonal outer periphery of the nut includes a corresponding number of sides, more preferably at least six sides.
• the linear grooves defined in the opposed sides of the polygonal periphery of the nut are defined by spaced opposed lips adjacent the opposite surfaces of the nut including a first lip overlying an adjacent surface of the plate and a second lip engaging an outer surface of the plate forming a secure and sealed attachment.
• the bottom surface of the grooves is inclined to facilitate attachment of the nut to the plate.
• the plate is generally configured similar to the prior mounting plate including a generally planar annular outer rim portion having a circular outer periphery to receive the cylindrical rim of the enclosure or housing of the oil filter, an annular inclined portion integral with the planar outer rim and a planar central portion surrounding the polygonal central opening, wherein the annular inclined portion includes a plurality of spaced openings which receive the oil from the engine block as described above.
• the oil filter mounting plate assembly of this invention may thus be formed by conventional forming techniques which do not require forging and internally threading of a boss following manufacture of the mounting plate.
• the mounting plate may be formed from a plate of sheet steel and the nut may be secured within the central polygonal opening in a die press.
• Figure 1 is a perspective view of a preferred embodiment of the oil filter mounting plate assembly of this invention from one side of the assembly;
• Figure 2 is a top view of the oil filter mounting plate assembly of Figure 1 from a side of the assembly opposite to Figure 1;
• Figure 3 is a side crosssectional view of Figure 2 in the direction of view arrows
• Figure 4 is a perspective view of the nut of the oil filter mounting plate assembly illustrated in Figures 1 and 2;
• Figure 5 is a top view of the nut illustrated in Figure 4;
• Figure 6 is a side crosssectional view of the nut illustrated in Figure 5 in the direction of view arrows 6-6; and
• Figure 7 is a top view of the plate illustrated in Figure 2.
• the oil filter mounting plate assembly 20 of this invention shown in Figures 1 to 3 may be conventionally formed from two components comprising the plate 22 shown in Figure 7 and the nut shown in Figures 4 to 6.
• the plate 22 may be formed from a metal plate, preferably steel, and includes a planar outer rim portion 26 having a circular peripheral edge 28, an annular inclined portion 30 and a planar generally annular inner portion 32 having a polygonal opening 34. Because the plate 22 has a uniform thickness, no forging is required, substantially reducing the cost as compared with the prior oil filter mounting plate assembly described above.
• the polygonal opening 34 preferably has greater than four sides, preferably at least six sides and most preferably eight sides, as shown in Figure 7 for example.
• the sides of the polygonal opening 34 are preferably linear and the polygon defined by the sides is preferably regular as shown.
• the inclined annular portion 30 includes a plurality of openings 38 which are preferably equally spaced as shown in Figures 1, 2 and 7 which form the inlet openings for the oil filter as described above and further described below.
• the openings 38 may be circular as shown and formed by conventional punching techniques known in the art.
• the nut 22 best shown in Figures 4 to 6 includes an annular body 40 including a central internally threaded bore 42 and a polygonal periphery 44.
• the polygonal periphery 44 of the nut 22 is substantially identical to the polygonal opening 34 in the plate 22 except for the grooves 46 described below. That is, the polygonal periphery 44 of the nut has the same number of sides as the polygonal opening 44 in the plate 22 and the sides of the polygonal periphery 44 of the nut are preferably linear.
• the nut 24 preferably includes at least two linear grooves 46 on opposed sides of the polygonal periphery each including a linear lip 48 adjacent one side of the plate 26 and a smaller lip 50 as best shown in Figure 6.
• the bottom wall 52 of the groove 46 is preferably inclined toward the smaller lip 50 as shown in Figures 3 and 6.
• the lips 48 and 50 extend linearly as shown in Figure 5.
• the diameter or major dimensions of the polygonal periphery 44 of the nut is slightly greater than the diameter or major dimensions of the polygonal opening 34 in the plate 22, such that the nut 24 must be press fit into the polygonal opening 34 in the plate and the lip 50 overlies the surface of the planar inner portion 32 of the plate as shown in Figure 3.
• the nut further includes an annular bearing surface 54 as best shown in Figures 1 and 4.
• the oil filter mounting plate assembly 20 may be assembled in a conventional die press. After forming the plate 22 from a sheet or plate of metal, preferably steel, and the nut from a metal preferably having at least the same hardness as the plate 22, the nut 24 may be fed to an installation head attached to one platen of a die press, wherein the plate is supported on a die fixture or die button on the opposed platen of the die press (not shown). In the most preferred method of installation, the plate 22 may be simultaneously formed by suitable dies in the die press.
• the nut 24 is oriented in the installation head, such that the polygonal periphery 44 of the nut corresponds to the polygonal opening 34 of the plate with the lip 50 of the groove 46 opposite the plate. As the die press is closed, the nut 24 is permanently installed in and attached to the plate 22 as best shown in Figure 3. The combination of the press fit and the interlock of the nut to the plate provided by the grooves 46 forms an essentially sealed connection between the nut and the plate, although an air tight seal is not required.
• the polygonal opening 34 in the plate 22 and the polygonal periphery 44 of the nut 24 may have six sides and the linear grooves 46 may be provided on more than two of the polygonal sides 44 of the nut 24.
• the grooves 46 may be formed in the polygonal nut on opposed sides simultaneously further reducing the cost.
• the oil filter mounting plate assembly 20 of this invention may be used with any conventional oil filter including a housing or enclosure including a tubular cylindrical side wall, wherein the open end of the tubular side wall is crimped or otherwise secured to the oil filter mounting plate assembly.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Applications Claiming Priority (3)

Publications (2)

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Family Applications (1)

Country Status (9)

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Citations (7)

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• 2002
  • 2002-06-03 CN CN02811434.5A patent/CN1596146A/zh active Pending
  • 2002-06-03 CA CA002448780A patent/CA2448780A1/en not_active Abandoned
  • 2002-06-03 WO PCT/US2002/017239 patent/WO2002100503A2/en not_active Application Discontinuation
  • 2002-06-03 BR BR0210248-0A patent/BR0210248A/pt not_active Application Discontinuation
  • 2002-06-03 MX MXPA03011202A patent/MXPA03011202A/es not_active Application Discontinuation
  • 2002-06-03 US US10/493,797 patent/US20050023226A1/en not_active Abandoned
  • 2002-06-03 AU AU2002303932A patent/AU2002303932A1/en not_active Abandoned
  • 2002-06-03 EP EP02731998A patent/EP1465718A4/en not_active Withdrawn
  • 2002-06-03 JP JP2003503318A patent/JP2004538412A/ja active Pending

Patent Citations (7)

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